Preheat your oven or airfryer to 400°
In a dry pan, toast the walnuts over medium heat until fragrant, about 2-3 minutes. Set aside
In the same pan, partially cook the pancetta, just enough to render out some fat, but not to cook all the way through (it will continue to cook and crips with the brussel sprouts).
In a bowl, add brussel sprouts. Drizzle with olive oil and season with salt and pepper to taste. Add pancetta (and any rendered fat), and stir to combine.
Spread brussels in an even layer in an air fryer basket/tray or a baking sheet (if using the oven).
Air Fryer: Cook for 12-15 minutes, shaking halfway through. Oven: Roast for 18-20 minutes, flipping halfway through.
Once air fried/roasted, add to a serving bowl. Toss in walnuts, cranberries, and feta.
In a small bowl, combine honey, chili flakes, garlic, and onion. Drizzle over brussel sprouts and and toss. Serve immediately.
